Open AccessEffects of different amendments on Lead and Cadmium in contaminated farmland soils around lead-zinc mines
Author(s) -
Ying Li,
Xiaomao Yang,
Hui Zeng,
Zhiyong Zhao,
Tingting Xu,
Ruibin Zheng
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/687/1/012013
Subject(s) - cadmium , environmental remediation , lime , zinc , soil water , chemistry , soil contamination , environmental chemistry , lead (geology) , contamination , pyrophosphate , environmental science , metallurgy , geology , soil science , materials science , ecology , biochemistry , organic chemistry , geomorphology , biology , enzyme
In order to provided a theoretical reference for the passive remediation of the farmland contaminated by cadmium and lead, eighteen different materials include lime kind agent, phosphate, iron oxide and clay minerals were used as the soil heavy metal passivators. Results showed that adding the passivators Ca(OH) 2 , sodium pyrophosphate, CaHPO4 could significantly decrease the available cadmium in soils, and the optimal concentrations were 2%, 1% and 2%, respectively. The passivators FeCl 3 , NaH 2 PO 4 and CaHPO 4 could significantly decrease the available lead in soils, and the optimal concentrations were 3%, 2% and 2%, respectively.